Let U = {1, 2, 3, 4, 5, 6, 7, 8, 9}, A = {1, 2, 3, 4}, B = {2, 4, 6, 8} and C = {3, 4, 5, 6). Find: (i) A’ (ii) B’ (iii) (A ∩ C)’ (iv) (A ∪ B)’ (v) (A’)’ (vi) (B – C)’